Sleeping mask



FIG. 1 is a front perspective view of a sleeping mask shown in an open position in an environment of use.

FIG. 2 is a front perspective view of a sleeping mask shown in a closed position in an environment of use.

FIG. 3 is a front view of a sleeping mask in an open position in an environment of use.

FIG. 4 is a front view of a sleeping mask in a closed position in an environment of use.

FIG. 5 is side view of a sleeping mask in an open position in an environment of use.

FIG. 6 is side view of a sleeping mask in a closed position in an environment of use.

FIG. 7 is another side view of a sleeping mask in an open position in an environment of use.

FIG. 8 is another side view of a sleeping mask in a closed position in an environment of use.

FIG. 9 is a top view of a sleeping mask in an open position in an environment of use; and,

FIG. 10 is a top view of a sleeping mask in a closed position in an environment of use.

The broken lines in the drawings represent environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a sleeping mask, as shown and described. 